It depends on what your style is. I haven't taken on Clair yet, but most dragons aren't pure dragon, there's always another type involved once they reach their final forms.

The blind one I don't have is dark typed with dragon. Dragonite is flying plus dragon. Same with Salamence. It's a good idea not to solely rely on their dragon moves. Powerful as they are, she'll know how to counter and have some ice moves waiting to one-shot you.

It's a good idea to do the same and anything to chip away at her. Dragons always, always hit like a mac truck. Gotta temper that was great defense.